Ittiri, facies A: Middle Miocene, Italy
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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unclassified
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Calcareous algae
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Echinoidea
- Echinolampadoida
- Echinolampadidae
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Echinolampas sp.
Gray 1825
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Echinoidea
- Clypeasteroida
- Clypeasteridae
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Clypeaster sp.
Lamarck 1801
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Bivalvia
- Pectinida
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Pectinida indet.
(Gray 1854)
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Bivalvia
- Ostreida
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Ostreoidea indet.
(Rafinesque 1815)
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| original and current combination Ostreacea | ||||||||||
| "oyster shells" | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Italy | State/province: | Sardinia |
| Coordinates: | 40.6° North, 8.5° East (view map) | ||
| Paleocoordinates: | 42.5° North, 4.3° East | ||
| Basis of coordinate: | stated in text | ||
| Geographic resolution: | small collection |
Time
| Period: | Neogene | Epoch: | Miocene |
| 10 m.y. bin: | Cenozoic 5 | ||
| Key time interval: | Middle Miocene | ||
| Age range of interval: | 15.98000 - 11.63000 m.y. ago |
Stratigraphy
| Formation: | Marne di Borutta | ||||
| Stratigraphic resolution: | formation | ||||
| Stratigraphy comments: "The Ittiri Section (Fig. 3B) consists of approximately 5 m of sandy sediments within the Marne di Borutta Formation." | |||||
Lithology and environment
| Primary lithology: | sandstone |
| Includes fossils? | Y |
| Lithology description: "Facies Ittiri-A is composed of a meter of fine, massive sandstone with very abundant calcareous algae remains that form 30% of the rock. Macrofossils are very abundant and include the irregular echinoids Clypeaster and Echinolampas and densely packed pectinid and oyster shells, without preferred orientation. When overlain by Facies Ittiri-B, contact is sharp." | |
| Environment: | transition zone/lower shoreface |
| Geology comments: "moderate- to low-energy sublittoral environment" | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils,mesofossils |
| Spatial orientation: | random |
| Fragmentation: | occasional |
| Bioerosion: | occasional |
| Encrustation: | occasional |
Collection methods and comments
| Collection excludes: | some macrofossils |
| Collection methods: | bulk,field collection |
| Reason for describing collection: | paleoecologic analysis |
| Taxonomic list comments:Only burrowing echinoids (mostly clypeasteroids) described. | |
Metadata
| Also known as: | Ittiri-A | ||
| Database number: | 187332 | ||
| Authorizer: | P. Novack-Gottshall | Enterer: | P. Novack-Gottshall |
| Modifier: | P. Novack-Gottshall | Research group: | marine invertebrate |
| Created: | 2017-07-21 13:12:35 | Last modified: | 2017-07-21 14:32:12 |
| Access level: | the public | Released: | 2017-07-21 13:12:35 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 62845. | A. Mancosu and J. H. Nebelsick. 2015. The origin and paleoecology of clypeasteroid assemblages from different shelf settings of the Miocene of Sardinia, Italy. Palaios 30(5):373-387 [P. Novack-Gottshall/P. Novack-Gottshall] |